Stats have been turning up searches for fictional assistive technology. There are a couple of ways I can take that: as a “wish list” of futuristic technology or as assistive technology in fiction. I’ll use the latter.
I have to start with William Horwood’s beautiful Skallagrigg. Because one of the protagonists becomes a game programmer and writes interactive fiction based on her life with quadriplegic CP, computers figure heavily. Since the book was published in 1986, set in the 70s onward, and narrated partly in the 00s, it contains some fascinating (and nostalgic, depending on your age) mentions of early assistive technology as well as personal computers and interactive fiction. Esther Marquand begins on a Possum typewriter and eventually acquires a mini-writer, a disguised Microwriter. Today it would be a CyKey or BAT.
In the dark-humored The Miracle Life of Edgar Mint, the title character has dysgraphia and uses a typewriter to pray. (The “miracle” is half sarcastic.)
This list is rather short. I admit I tend not to read books featuring disabilities lately, because the ones I find either nauseate or anger me.